Tektronix WFM700 Series, Service Manual

Page: 42 / 194

Performance Verification
2- 10
WFM700 Series Waveform Monitors Service Manual
This test checks the digital data paths.
Performance Requirement.
This test verifies performance characteristics and is
listed in the test record.
The following characteristics are directly checked:
H
Vertical Measurement Accuracy, YPbPr
H
Vector Vertical Gain Accuracy
The following characteristics are indirectly checked:
H
Frequency Response
H
Sweep Accuracy and Linearity
H
Vector Horizontal Gain Accuracy
H
Vector Display to Graticule Registration
H
Lightning and Diamond Vertical Gain Accuracy
H
Arrowhead Signal to Graticule Registration
H
Arrowhead Composite Limit Cursor Accuracy and Detection Level
Accuracy
1.
Ensure that the Self Tests on page 2--4 have been performed and passed.
2. Connect the HD video generator to INPUT A using a 75
8
cable.
3. Press the INPUT button and select Input A .
4. Set the HD video generator for a 1080i 59.94 10-bit Shallow Ramp Matrix
signal.
5. Press the WFM button.
6. Touch Pr and Pb to turn off the color difference signals.
NOTE
. The Y component must be on to allow both the Pr and Pb components to
be turned off.
Signal Data Paths